Thomas married Hannah Mercer in Sep 1744 in Chester Co., Pennsylvania. Hannah (daughter of Thomas Mercer, Jr. and Hannah Taylor) was born on 28 Mar 1724 in Westown, Chester, Pennsylvania; died on 27 Dec 1770 in Westown, Chester, Pennsylvania. [Group Sheet]

1. John Yearsley was born in 1745 in Westown, Chester, Pennsylvania; died in 1770.
2. Lydia Yearsley was born in 1747 in Westown, Chester, Pennsylvania; died in 1785 in Chester Co., Pennsylvania.
3. Isaac Yearsley was born on 3 Nov 1754 in Thornbury, Chester, Pennsylvania; died on 29 Apr 1834 in West Caln, Chester, Pennsylvania.
4. Robert Yearsley was born in 1757 in Westown, Chester, Pennsylvania; died on 31 Jan 1835.
5. Ann Yearsley was born on 21 Jan 1757 in Thornbury, Chester, Pennsylvania; died in 1822.
6. Thomas Yearsley was born in 1759 in Thornbury, Chester, Pennsylvania; died on 11 Nov 1809 in Thornbury, Chester, Pennsylvania.
7. Patience Yearsley was born in 1760 in Thornbury, Chester, Pennsylvania; died on 5 Dec 1828 in Muncy, Lycoming, Pennsylvania; was buried in Muncy, Lycoming, Pennsylvania.
8. Nathan Yearsley was born in 1762 in Thornbury, Chester, Pennsylvania; died on 24 Aug 1825 in Middletown, Delaware, Pennsylvania.
9. Hannah Yearsley was born on 1 Mar 1763 in Thornbury, Chester, Pennsylvania; died in 1812 in Baltimore, Maryland.
10. Mary Yearsley was born in 1764 in Thornbury, Chester, Pennsylvania; died in 1785.

John married Sarah Conway on 3 May 1710 in Middlewich, Cheshire, England. Sarah was born in 1689; died on 25 Mar 1728 in Thornbury, Chester, Pennsylvania. [Group Sheet]